AC and DC Voltage Applications with DC-DC Hybrid Converter

DC-DC converters and DC-AC inverters are power electronic circuit elements considered for electrical energy conversion. When DC-DC buck boost converter uses the 0-0.5 range as the operating ratio of the power switches it works in the buck mode and when it uses 0.5-1 it works in the boosting mode. DC-DC converter which can operate in both increasing and decreasing mode between 0-1 will provide a wider and more flexible energy conversion ratio for loads. An inverter that will be connected to the converter system will provide a high and wide range of alternating current and voltage. Therefore this article presents inverter operation with Hybrid Buck-Boost converter input instead of traditional Buck-Boost DC-DC converter. First the circuit structure and operation of the proposed system are given. Then applications are made on resistive (R) and inductive (L) RL as in series connected and RLC (resistive inductive capacitive) as in series connected loads. The converter output results obtained are compared with the results obtained from the conventional converter.